"If a '10 star' rating was possible, this seller would receive that from me. Order arrived very quickly, was packaged properly and I enjoyed some great communication with the seller. Wouldn't hesitate at all doing business with this seller again for a filter replacement or new water filter system. It's obvious seller cares about people and strives to maintain business integrity!"

happyhart

"It was a wonderful and satisfactory experience I've had shopping at BestFilters.com. From browsing through their products to checking out, every step was a breeze!"

April M

I have dealt with them for about 8-9 years for personal showerhead and filter needs. Greatly recommended."

Canyonland

"I have used Bestfilters.com for 3 years now - they are what an online retailer should be: - responsive - helpful - competitively priced"!

Blueair HepaSilent™ Filter Technology features the Blueair Progressive
Filter. The Blueair Replacement Filter with the highly efficient
Pre-Filter, traps six times more
dirt and particles than many other air purifiers. This is because of
Blueair’s progressive
filtration. Most other filters have a thin layer of
different size fibers throughout the filter. Blueair filters have
millions of ultra thin fibers in three progressive layers. This
Progressive Filter design resists premature clogging, these filters are
made from a network of hypo-allergenic fibers. This design permits much
longer, continuous filtration at peak levels. Because of this filter
design air flows more freely through the filters. This is why
Blueair units deliver more clean air at a faster rate with
less noise than any other air purifier.

First Layer:
Large particles such as dust and pollen are captured in the first layer
consisting of larger fibers. In this stage particles are stopped
and trapped by direct contact with the filter fibers.

Second Layer: This layer consists
of a finer fibers that collect smaller particles such as
bacteria and allergens. This layer of the filter intercepts the smaller particles that escaped the first
layer.

Third Layer: In this layer, much smaller
particles like viruses, mold, pet dander and minute particles are
filtered out. This layer consists of ulta-fine fibers, as small as 0.5
micron. Minute Particles enter this layer with an imparted negative charge and
easily adhere stick to the fibers, thus capturing particles as small as
0.1 micron at 99.97% efficiency.